Roller such for example as is used in calenders



Dec. 11, 1934. E. GMIIEJDER 1,983,662

ROLLER SUCH FOR EXAMPLE AS IS USED IN CALENDERS Filed Dec. 11. 1930 which is effective in operation.

Patented Dec. 11, 1934 UNITED STATES PATENT OFFICE ROLLER SUCH FOB EXAMPLE AS IS USED IN CALENDERS chusetts Application December 11, 1930, Serial No. 501,514 In Germany October 5, 1929 2 Claims.

My invention relates to improvements in rollers such for example as are used in calenders, and the object of the improvements is to provide a roller which can be manufactured at low cost and For example, when using the roller in a calender for treating textile goods or paper in a wet or dry state, a result is obtained which is about the same as the result obtained by means of rollers made from paper or cotton. With this object in view my invention consists in constructing the whole roller or sections thereof from cottonized bast fiber or a. mixture of bast fiber with other fibers of other material, i. e. the roller is built of cottonized bast fibers pure or mixed with other fibers or it is built of disk-shaped sections of such fibers and disk-shaped sections of other fibers or of any other combinations with cottonized fibers.

By the term bast fibers is meant the fibers from the bast of the plants that is between the stalk and the outer bark, such as flax, hemp or ramie. By the cottonizing process the raw bast fibers are broken up into the elementary fibers, which are 30 to 50 mm. in length, or even longer.

For the purpose of explaining the invention several examples embodying the same have been shown in the accompanying drawing in which the same reference characters have been used in all the views to indicate corresponding parts. In said drawing,

Figs. 1 to 4 are elevations showing different examples of rollers embodying the invention.

In the example shown in Fig. 1 the roller which is used for example in a calender for treating fabric or paper in a dry or wet state, comprises a shaft 0 and a body a made from cottonized bast fiber or a mixture of bast fiber and other fiber such as cotton or other spinning material.

The bast fibers are used as roller mantles made in the same way as the mantles made from cotton, heretofore employed for this purpose.

In the modification shown in Fig. 2 the roller consists of a shaft 0 a body a of bast fiber or a mixture of bast fiber and other spinning material, and end portions 22 b made from a material difierent from that of the body a such for example as cotton. Preferably the portions b b consist of disksmade of steel or cast-iron.

In the modification shown in Fig. 3 the roller comprises a shaft c and a body composed of diskshaped sections a of cottonized bast fiber or a mixture of cottonized bast fiber with other spinning material and end portions b made from a material different from the material of the disks a such for example as cotton.

In the modification shown in Fig. 4 the roller comprises a shaft 0 and alternately arranged disk-shaped sections a made from cottonized bast fiber or a mixture thereof with other material and sections b made from a material different from that of the sections a such for example as cotton.

The fibers may be used as loose fibers or as Waste yarn, and made up into so-called cakes which are pushed over the roller shaft and compressed in an axial direction. Instead of the cakes the fiber or waste yarn material can be filled into a sheet iron mantle which is put around the roller shaft and spaced therefrom. After compression of the inserted fiber the outer iron mantle is removed.

I have found that when used in a calender the roller has an effect between that of the rollers made from paper, regardless of the kind of fiber used in making the paper, and those made of cotton, the new roller combining a somewhat dull gloss similar to that produced by the more elastic cotton roller and a sharper gloss similar to that produced by the hard paper roller. The roller can be manufactured at comparatively low cost and at much lower cost than paper rollers, and it is free of foreign matter such as metal chips which are frequently found in paper rollers.

I claim:

1. A calender roller comprising a shaft and a body composed of alternately arranged sections containing cottonized bast fiber and sections made from cotton fibers.

2. A calender roller comprising a shaft, and a body composed of a plurality of sections, certain of which contain cottonized bast fiber, and others of which are made from cotton.

EMIL GMINDER. 

